I personally would not use kingsford blue for a comp. Ironically, I would suggest you use Kingsford competition for an actual competition over kingsford blue.
KB is great for a quick steak or burger with the whole half price summer sales. But I would not smoke with it, let alone smoke with it in a competition (ok, ive used it to smoke, but its usually mixed up with some royal oak or something else).
But thats just me. Others will probably disagree. Myron Mixon has won a ton of awards with KB and lighter fluid (but that doesn't necessarily make it right).
Weber One Touch Gold
2001 Weber Genesis that is no longer used since the OTG